Sample No.: LEW87001; LEW87003; LEW87008; LEW87022; LEW87025; LEW87027; LEW87028; LEW87167; LEW87249

Location: Lewis Cliff

Field No.: 4403; 4631; 4780; 4400; 4289; 4276; 4297; 4439; 4783

Weight (g): 4.0; 2.1; 1.4; 75.4; 0.9; 0.8; 1.2; 1.4; 3.1

Dimensions (cm): 2x1.2x1; 1.3x1x1; 1.1x1x8; 4x3.5x3.5; 1.3x1.2x0.6; 1.2x0.6x0.7; 1.4x1.2x1; 1.2x1.2x0.8; 1.5x1.3x1.2

Meteorite Type: C2 Chondrite

Macroscopic Description: Roberta Score and Carol Schwarz

There are spots of oxidation and small deposits of salt in the interior of most of these pebbles; otherwise the matrix is black with abundant white inclusions. Brown patches of fusion crust cover about 80% of 87022 and it has several penetrating fractures and a 1 mm weathering rind.

Thin Section (LEW87001,2; 87003,2; 87008,2; 87022,8; 87025,2; 87027,2; 87028,2; 87167,2; 87249,2) Description: Brian Mason

The sections of 87001, 87003, and 87249 are so similar in texture and mineral compositions to those of LEW87022 that these meteorites can confidently be paired; LEW87008, 87025, 87027, 87028, and 87167 resemble them macroscopically and have the same specific gravity, and are therefore also tentatively paired with LEW87022. LEW87022 has a dark brown to black matrix with numerous small (up to 0.3 mm) mineral grains and a few chondrules (up to 0.9 mm across). Microprobe analyses show olivine generally close to Mg2SiO4 in composition, but also a few Fe-rich grains; pyroxene is less abundant than olivine, and most grains have composition near MgSiO3. These meteorites are C2 chondrites.